Is this scenario residential or commercial? (in NY state)

I know you can get a residential loan on up to a 4 unit property assuming it will be your primary residence, and you can even get a residential loan on a property with a commercial rental like a storefront beneath an apartment as long as the residential space is the majority of the sq footage. The thing I don't know for sure, is whether the commercial space counts towards the unit count. I found a property that has 4 residential units and a downstairs storefront. My gut feeling based on what I've found is that this wouldn't be eligible as residential but I wanted to double check, just in case.